Fittings

At Process Systems, we supply a complete range of fittings engineered to provide secure, long-lasting performance in industrial, commercial, and domestic systems across Australia & the Pacific Region. Whether you're working with gas, oil, water, or compressed air, our fittings are manufactured to comply with industry standards and deliver strong connections that work every time.

We stock NPT, push fit and BSP fittings in sizes from M5 up to 4” BSP, with a wide range of configurations available — elbows, tees, plugs, BSP connectors, reducers, and more. You’ll also find push-fit fittings, brass and stainless steel options, silencers, and quick couplers in stock and ready for fast shipping.

All threaded fittings are qualified to ensure correct operation and thread compatibility, so you can install with confidence and get consistent results in every application.

Our full range of NPT, push fit and BSP fittings

We offer one of the most comprehensive NPT, push fit and BSP fitting ranges in the country, with products suitable for a wide variety of applications and environments. Our product categories include:

• Brass fittings — Durable, corrosion-resistant, and cost-effective. Ideal for oil, water, and low-pressure gas systems.

• Stainless steel fittings — Made from 316 stainless steel for corrosion resistance and high working pressures. Built to perform in tough or hygienic environments.

• Push fit fittings — Available in plastic and stainless steel for fast, extremely easy installation without tools.

• Quick couplers — One-touch Nitto-compatible couplers designed for rapid connection and disconnection in compressed air systems.

• Silencers — In both brass and stainless steel to reduce noise in pneumatic equipment.

• Hose barbs — For connecting flexible hoses to threaded fittings using a barbed design for leak-free sealing.

Whether you need a replacement elbow, a full system of threaded fittings, or just one BSP connector, we have the components you need in stock and ready to ship.

Quality components engineered for performance and reliability

Each fitting we supply is engineered for long-term performance and manufactured using high-quality materials. Our threaded fittings are produced with qualified thread sizes and tolerances to deliver a reliable fit and consistent seal across all standard BSPP and BSPT connections.

You can maximise sealing performance by installing with the right tools and following best practice, especially in high-pressure or high-temperature applications. All of our fittings are made to ensure strong connections that hold up under pressure, temperature, vibration, and time.

Our fittings are suitable for use in:

• Compressed air systems
• Hydraulic and pneumatic control
• Irrigation setups
• Water treatment
• Fuel and oil lines
• Gas connections
• Industrial process systems

Choosing the right NPT, push-fit or BSP fitting

When selecting NPT, push-fit or BSP pipe fittings, it’s essential to consider:

• Material – Choose brass for general use, 316 stainless steel for harsh or corrosive conditions, or UV-stabilised plastics for outdoor installations.

• Thread size – Ensure your fitting matches the correct thread size (BSPP or BSPT). Our team can help you check compatibility if you’re unsure.

• Configuration – Whether you need a straight connector, elbow, tee or plug, we offer a full range of shapes and sizes to suit your layout.

• Application – Confirm whether the fitting will be exposed to gas, oil, water, vibration, or chemicals. This will help you choose the most appropriate product.

If you have a question about fitting type, installation, or compatibility, our team is here to help with expert guidance and responsive support.

Installation tips

To ensure the best results from your NPT, push-fit or BSP fittings:

• Always install in accordance with the manufacturer's guidelines
• Use thread sealant or PTFE tape to maximise sealing performance
• Avoid overtightening, which may damage threads or crack fittings
• Confirm the system’s pressure and temperature rating before selection
• Use appropriate tools for installation, especially with stainless fittings
• Store plastic fittings away from direct sunlight before use to preserve UV resistance

Following best practices will ensure not only a secure seal but also long-lasting, trouble-free operation over many years.

Reliable supply, fast delivery

At Process Systems, we keep our most in-demand NPT, push-fit and BSP fittings and accessories in stock, ready for fast dispatch across Australia. Whether you need a single BSP connector or bulk fittings for a project, we can supply what you need quickly and efficiently.

We offer:

• Same-day dispatch on stocked items
• Free shipping for qualifying online orders
• Multiple payment options for a smooth checkout
• Expert advice on product selection and replacement fittings

You can browse our range and order online with confidence — our qualified threaded fittings and components are tested, approved, and built to exceed expectations.

Why choose Process Systems?

As part of Process Systems, Valves Online combines over 30 years of industry experience with one of Australia’s most trusted catalogues of process fittings and valves. Our customers count on us for:

• High-quality BSP and metric threaded fittings
• Expert support and product recommendations
• Fast and efficient Australia-wide shipping
• Fully tested and approved products made to last

From brass to 316 stainless steel, from push-fit fittings to quick couplers, we make it easy to find the NPT, push-fit or BSP fitting that suits your system.

Browse our NPT, push-fit and BSP fittings today

Whether you’re building a new system or replacing a worn-out fitting, you’ll find the right product in our complete range of BSP threaded fittings and accessories. We have the right thread size, material, and configuration for your application — and the stock to support it.

Browse our range online now or contact our team if you need help choosing the right part. At Process Systems, we’re here to help you build strong connections that last.

Shop NPT, push-fit and BSP fittings online for free delivery Australia-wide